Exam 4 Practice Questions

Question 1

Impurities begin to be filtered out at the blood

Answer 1

the glomerulus (specifically the capillary bed)

Question 2

The nephrons of the kidneys continuously filter the blood, producing ~180L of filtrate per day. How much of this filtrate is excreted as urine.

Answer 2

less than 1%

Question 3

Glomerular filtration moves water and solutes

Answer 3

from the blood to the nephron

Question 4

Tubular reabsorption moves water

Answer 4

from the nephron to the blood

Question 5

What part of the nephron is regulated by the endocrine system for urine production and overall water balance

Answer 5

the collecting duct

Question 6

What are each of the following(study image)

Answer 6

1. glomerular capsule
2. proximal
3. proximal condiluted tubule
4. nephron loop
5. distal condiluted tubule
6. collecting duct

Question 7

In humans, how many chromosomes do diploid somatic cells have?

Answer 7

46

Question 8

In humans, how many chromosomes do haploid gamete cells have?

Answer 8

23

Question 9

During spermatogenesis, one primary spermatocyte will undergo meiosis to produce:

Answer 9

four spermatozoa

Question 10

During oogenesis, one primary follicle is activated to produce

Answer 10

one ovum; three polar bodies

Question 11

The testes produce:

Answer 11

testosterone; haploid gametes

Question 12

The ovaries produce

Answer 12

haploid gametes

Question 13

The corpus luteum produces

Answer 13

progesterone

Question 14

Which of the following activates both spermatogenesis and ovulation?

Answer 14

luteinizing hormone(LH)

Question 15

Following ovulation, levels of ovarian hormones(progesterone and estrogen) rise. If no fertilization occurs, what happens to ovarian hormone levels?

Answer 15

they decrease

Question 16

Human chronic gonadotropin(hCG) is produced by:

Answer 16

none of the above

Question 17

A zygote

Answer 17

contains chromosomes from both parents

Question 18

Hemoglobin B is a protein that works to carry oxygen in erythrocytes. The gene encoding the hemoglobin B protein is found:

Answer 18

on chromosome 11 of all cells in the body

Question 19

Fertilization occurs when a single sperm binds to the oocyte’s sperm binding receptors.

Answer 19

false

Question 20

The primary germ layers that give rise to the tissues of a developing embryo are

Answer 20

the ectoderm, mesoderm, and endoderm

Question 21

Where does implantation typically occur?

Answer 21

the endometrium

Question 22

Luteinizing hormone is required for

Answer 22

ovulation

Question 23

The karyotype below is

Answer 23

a normal male

Question 24

John says that all of chromosome 14 is a gene since its a long piece of DNA. Suzy says only the portions of chromosome 14 that encode proteins are genes. Who is right?

Answer 24

Suzy

Question 25

Pete sends away his genetic ancestry to a commercial genetic analysis company. In the report, he learns that he carries two alleles for the Hbb gene, HbA, and HbS. Pete is, therefore:

Answer 25

heterozygous

Question 26

The protein channels responsible for tubular reabsorption of water are:

Answer 26

aquaporins

Question 27

Release of antidiuretic hormone(ADH) by the pituitary causes:

Answer 27

increased aquaporins in the collecting duct

Question 28

Predict the outcome: A surge of antidiuretic hormone(ADH) is released from the pituitary:

Answer 28

decreased, concentrated urine will be produced

Question 29

Urine is conveyed from the kidney to the bladder by:

Answer 29

the ureter